| Patent application number | Description | Published |
|---|
| 20100296467 | METHOD AND APPARATUS FOR RANDOM ACCESS IN MULTICARRIER WIRELESS COMMUNICATIONS - Methods and apparatus for random access in multicarrier wireless communications are disclosed. Methods and apparatus are provided for physical random access channel (PRACH) resource signaling, PRACH resource handling, preamble and PRACH resource selection, random access response (RAR) reception, preamble retransmission, and transmission and reception of subsequent messages. A method for maintaining an allowed multicarrier uplink (UL) random access channel (RACH) configuration set by adding an UL carrier to the allowed RACH configuration set provided that a triggering event occurs and performing a random access (RA) procedure using the allowed RACH configuration set. A method for sending data in multicarrier wireless communications by determining a set of available UL carriers and selecting an UL carrier from the set of available UL carriers. | 11-25-2010 |
| 20110021154 | METHOD AND APPARATUS FOR MONITORING FOR A RADIO LINK FAILURE - Methods and apparatus are described for monitoring for a radio link failure in a long term evolution-advanced (LTE-A) system operated with carrier aggregation. The methods include criteria for determining radio link failure, recovery events, and the actions that a wireless transmit/receive unit (WTRU) may take upon the occurrence of such events. | 01-27-2011 |
| 20110134774 | COMPONENT CARRIER ACTIVATION/DEACTIVATION IN MULTI-CARRIER SYSTEMS - Methods and apparatus for addressing wireless transmit/receive unit (WTRU) behavior in response to configuration, configuration parameters and access issues related to the activation/deactivation process when the WTRU may be configured with multiple serving cells or carrier aggregation. | 06-09-2011 |
| 20110243066 | Uplink Control Data Transmission - Methods and systems for transmitting uplink control information and feedback are disclosed for carrier aggregation systems. A user equipment device may be configured to transmit uplink control information and other feedback for several downlink component carriers using one or more uplink component carriers. The user equipment device may be configured to transmit such data using a physical uplink control channel rather than a physical uplink shared channel. The user equipment device may be configured to determine the uplink control information and feedback data that is to be transmitted, the physical uplink control channel resources to be used to transmit the uplink control information and feedback data, and how the uplink control information and feedback data may be transmitted over the physical uplink control channel. | 10-06-2011 |
| 20110249578 | CHANNEL STATE INFORMATION TRANSMISSION FOR MULTIPLE CARRIERS - Channel state information is reported in periodic and aperiodic reports for multiple component carriers or serving cells. Channel state information may be reported for a subset of aggregated downlink carriers or serving cells. For an aperiodic report, the carrier(s)/serving cell(s) for which channel state information is reported are determined based on the request for the aperiodic report. When a CQI/PMI/RI report and a HARQ ACK/NACK report coincide in a subframe, the HARQ ACK/NACK report is transmitted on PUCCH, and the CQI/PMI/RI report is transmitted on PUSCH. | 10-13-2011 |
| 20110292854 | RETUNING GAPS AND SCHEDULING GAPS IN DISCONTINUOUS RECEPTION - A method for scheduling a time when a retuning gap occurs by a wireless transmit/receive unit includes detecting a retuning triggering event; determining a period of time when a retuning gap occurs, on a condition that the triggering event is detected; and performing radio frequency front end retuning during the retuning gap. | 12-01-2011 |
| 20120003943 | PERFORMING MEASUREMENTS IN WIRELESS COMMUNICATIONS USING MULTIPLE CARRIERS - Methods and systems to configure and/or reconfigure measurement configuration in wireless communications with one or more cells are disclosed. Measurement configuration reporting may be reconfigured based on events associated with the one or more serving cells and/or one or more serving component carriers, among others. Measurement configuration and measurement configuration reporting may also be reconfigured based on events associated with one or more serving component carriers. | 01-05-2012 |
| 20120008600 | MAINTAINING TIME ALIGNMENT WITH MULTIPLE UPLINK CARRIERS - Maintaining time alignment with multiple carriers is contemplated. A group of uplink carriers (UL CC sets) that operate with a single Timing Advance (TA) may be determined, and a TA value may be applied to a specific UL CC set. A wireless transmit/receive unit's (WTRU) capability of using multiple TAs may define a group index of a few bits for each UL CC set. A TA Command received in a Random Access Response message may be used to apply the TA value to each UL carrier of the UL CC set. The WTRU may determine which UL CC set the TA value applies to based on which DL carrier the command was transmitted from. The WTRU may determine which UL CC set the TA value applies to based on the Group Index being explicitly provided in the command. The WTRU may release multi-CC configurations upon Time Alignment Timer (TAT) expiry. | 01-12-2012 |
